Hydraulic dredge



Mayl 8,` 1928.

R. R. DILEY ET AL HYDRAULIC DREDGE Filed Seht. 1l, 1926 5 Sheets-Sheet1,

3 NeUJ. MHA o ma En DVEA R WJ RL w May 8, 1928 1,668,671

R. R. nAlLl-:Y ET AL HYDRAULIC DREDGE Fle S693'. 11. 1926 3 Sheets-Sheet2 642245. B7 ATTORN.

May 8, 1928.

R. R. DAILEY ET AL HYDRAULIC DREDGE Filed Sept. 11, 1926 3 Sheets-Sheet31- .www

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INVENTORS Foy 7?..Darl geg Leray Vor-hres ATTOR Patented May 8, 1928.

UNITED STATES no! n. DAILEYAND Lenoir voimrns, oF ooLonAno SPRINGS,comme.

HYDRAULIC DREDGE.

Application. andl september 11, i928.- seriai Heisman Qur inventionrelates to 'suction dredges for the recovery of valuable metals from thebeds of streams, and our ob-ject in general` iS to provide features, 1nthis class of dredges whereby the bed of a stream may be loosened so asto facilitate the. pompino of the solid articles through conduitsto tlieslulco box. ore, specific objects are. to.- provide auxiliary agitatingand loosening means to be used in, connection, with the agitating andscreening device described in our Patent Number 1,597,586.; `to provideauxiliary means to remove, coarse waste material to the rear after theliner portions containing the values have been removedthrough thescreening devices.;` to provide liftingmcans for the agitating andscreening devices and means to. holdsaid devices in working engagementwith the ground; and toiprovide actuati I means` tor the swinging,lift-ing and tbe oldingdown of saidagitatin'g and screening devices.Other objects-1 willA appear as the description progresses..

`E`igure I represents a side elevation of a dredge, containingxourimprovements; Fig. 2, a plan view of Fig. l, partlybroken away; Fig 3,a, sectional elevation, partly broken away of Figi 1 on the line A-A;Eig` 4,8.. fragmentary sectional elevation of tbe agitating andlscreening devicewith the discharge pipe ot the; auxiliary agitatingdevice f installed therein,` drawn to, an -enimagedscale.;y` Fig` 5', asectional elevation of1 the. agitatingand screen device on `the lineB-B. in 4;` andFig.. 6, an eleva.- tion of a removalegrid screen plate.

Although `we show the preferred embodiment of. our improvements. we donot thereby limitourselvesto the preciso forms shown, but wishl itunderstood that various changes in. the. details of construction may bemade within the. scope of Vwhat `hereinafter is claimed, withoutdeparting from the spirit of the invention.

Three. boats. l, 2 and 3. aie disposed side by Side und support a framework composed` 0f longitndinalk beams 4, 5p, 6 and 7 Connected bytransverse beams 8, 9, 10, 11, 121l and 12.".` Two longitudinal beams 13and 1 4V are disposed on the transverse beams and extend ,the fullllength of the.' frame. Two upright. beams 15 and 16. are` mounted onbeams 4 and "l",l respectively, and support a transverse beam 17 bracedby oblique beams 1 8.. Journals 1 9, 20 2.1 and 22 are mounted ontransverse beam 17. A sleeve 23y .is provided with. al bearing 24`pivotally mounted on journal "19. A bracing beam 25 is secured toysleeve 23 and carries a bearing 26 pivotally mounted on journal 20.` Acrossbeam 25a is secured to beam 25 and` sleeve 23 to support sheaveswhich will hereinafter be described. A swinging beam 27 is slidal'ilymounted in sleevef23 and carries an agitating and screening device 28provided -with removable grid screening plates A and removable shoes,B..` A beam 32 is pvoted to beam 27 at the top and ad justably connectedat the `lower part by channels 33 and 34. Scoops. 35 and 36 are pivotedto beams 27 and 32., respectively. A centrifugal dredge pump 38` ismounted on beams 13` andV 14 and connected tot an operating electricmotor 85.; A flexible in.- take conduit 39 communicates with the.agitating `and screening device 28 and an outlet conduit 401 leads "tothe sluice box 41. A i'iiic 42 is disposed in sluice box 4l.` A cable 43is attached` to transverse beam 8 and passes over sheave 44 to windingdrum 45. A shaft 46, 'carrying a slieave47, s mounted in beams 6 and 7.A cable 4S is secured to shaft 46 and passes overv sheaves 49, 47 and 50to a winding drum mounted on the same shaft as windingdrum 45. Theclockwise motion ofwinding drum 45 wind cable 43 thereon andswings.ubeams 27 and 32 to the rear of the boats. `The clockwise motion of thewinding drum upon which i cable 48 is wound, swings beams 27 and 32 tothe frontof the boats. e e i A. sleeve 23.a is `provided with a bearing24* pivotalb7 mounted on journal 22. A bracing beam 29 is connected tosleeve 23 itndcarries a bearing 30 'pivotally mountedjon journal 21. Aswinging beam 2,7 is slidably mounted in sleeve 23a and carriesan ag1-tat-ing and screening device like 28. A beam 32 .is pivoted to beam27qat the top and connected by channels. The clockwise II1o` tionofwinding drum 45 pulls cable 43l over sheave 44a and swings beams 27aand 32 to the rear of the boats. The clockwise Inotionof winding drum45.* pulls cable 4.8*

over sheaves 49,, 47 a and 50a and swingsl said beams to the front.

The radial lifting means for the swinging beams 27 and. 32, comprise awinding drum 51, sheaves 52 and 53, and a cable, 54 secured to beam 27and wound upon drum 51. A cable 54 is secured toA beamv 27*l and passesover sheaves 521 and `53a to.` winding drum 51". The anti-clockwisemotion of winding drum 51 winds the cable 54 thereon and lifts beams 27and 32, beam 27 sliding upward through sleeve 23. The anticlockwisemotion of winding drum 51, winds cable 54'd1 thereon and lifts beams27fl aud 32a radially.

In somel cases the weight of the swinging beams is not sufficient tohold the agitating and screening device in engagement with the groundand'we therefore provide auxiliary means to hold said devices in workingengagement with the ground, These means comprise the winding drum 51,sheaves 62 and 63 and a cableV 61. The cable 61 is attached to beam 27at the top and passes under sheave 52 and over sheave 63 to'theunderside of winding drum 51. The clockwise motion of drum 51 windscable 61 thereon and pulls beam 27 downward through sleeve 23. A similarcable 61l is attached to beam 27*l and passes under sheave 52 and oversheave 95 to the underside of winding drum 513. The clockwise motion ofdrum 51L winds cable 61Il thereon and pulls beam 2"a downward throughsleeve 23.

Pump 38 is operated b v electric motor 85 and pump 38"", by electricmotor 86. u

The actuating means for the main winding drums comprise a motor 64provided with a drive shaft 65 upon which a worm 66 is mounted. A shaft67 carries a worm gear 68. a spur gear 69 and a bevel gear 70. A shaft71 carries a bevel gear 72 meshed with bevel gear 70. and a spur gear72a. A main drum shaft 73 is journalled on longitudinal beams 4. 5, 6and 7 and carries winding drums 45, 45, 45b and ay drum not shown. Aspur gear 74 is mounted on shaft 73 and meshed with spur gear 7 2u.Suitable clutches 75 are provided to engage the winding drums mounted onshaft 73. A

A spur gear 69 is mounted on shaft 67 and a spur gear 78 is mounted onshaft 76. Gear 69 actuates gearl 78 via gear 77. Shift gears arecontained in housing 79 and are operated by lever 80. Similar.shiftgearsare contained in housing 79a and operated by lever 803. A worm and wormgear are mounted in housing 81 and actuate shaft 82 which carries spurgear 83. A gear 84 is mounted on the drum shaft of drum 51 and meshedwith gear 83. A similar set of gears actuates drum 51.

The swinging beams carrying the agitating and screening devices areswung'forward and aft and at the same time the boats are moved slowlysidewise over newV ground. This sidewise movement is accomplished byoperating cables and winding drums not shown, the cables being anchoredon land. The boats are moved up stream or allowed to move down stream,by `suitable winding drumsl and cables not shown, the cables be- Y inganchored up and down stream.

The solid particles with the water are sucked through grid pla-tes Ainto the right hand agitating and screening device 28 and travel throughconduit 39, pump 38 and conduit 40 to sluice box 41 and over ritfle 42to the rear where it is returned to the stream, the values being leftlin the sluice box. The

vwater and values entering the left hand agitating and screening devicetravels through conduit 39a, pump 38 and conduit 40l to sluice box 41and over riflle 42 to the rear.

The scoops 35 and 36 remove the coarse waste material to the rear of theboats after the agitating and screening devices have removed the finerportions containing the values.

To insure efficiency the ground must be thoroughly loosened so that thevalues .can

be conveyed to the sluice box., I therefore l A similar discharge pipeis mounted in the left hand agita-ting and screening device andcommunicates with transverse conduit 88 via flexible conduit 89a. Thesedischarge pipes may be made with a nozzle to insure greater force ofdischarge. The pump 90 draws the water throughconduit 91 and forces itthrough conduits 92, 88 and 89 and discharges itfwith great forcethrough pipe 87. This water striking the ground with great force,loosens up a great deal more ground than is loosenedby the agitating andscreening device alone, as the said device moves along in its swing.

The operating means for pum 90 comprise a pulley 93 mountedon sliaft 94,a

pulley 95 mounted on shaft 65 and a belt Y 96 mounted on said pulleys. 4

To increase the capacity, a` plurality of boats may be aligned side byside andspaced from each other. A swinging beam carrying an agitatingand screening device may be mounted as described and disposed betweeneach pair of boats and operated in the same manner as hereinbeforedescribed.

lVe claim:

1. AThe combination of a floating support; a transversely disposed bea-mand supporting standards therefore, mounted on said floating support; aplurality of sleeves pivotally mounted on said transverse beam; a beamslidably mounted in each sleeve and adapted to carry an agitating andscreening device on the lower end; a beam pivoted to the top of eachslidably mounted beam and adjustably connected thereto at the lowerportions; al scoop pivotally mounted on the lower end of each pivotallymounted beam,

and means to lift said slidably mounted beams through said sleeves; forthe purposes set forth.

2. The combination of a floating sup rt; a. transversely disposed beamand stan ards therefor, mounted on said floating supporti; a pluralityof sleeves pivotally mounted on sald transverse beam; a beam slidablymountedrin each sleeve; ak beam pivoted to the* top of each slidablymounted beam and connected thereto at the lower rtlon by channels; ascoop mounted on said piv-v slid through Said sleeves, and means toactuate said winding drums.

3. The combination of a floating support; standards mounted on saidsupport; a transversely disposed beam mounted on said standards; sleevespivotally mounted on sa-id transversely disposed beam, each sleevecarrying a beam slidabl mounted therein; a ground engaging mem ermounted on the lower end of each slidably mounted beam; a. cableattached to each slidably mounted beam; sheaves and a winding drum,whereby said slidably mounted beam is forced down to hold said groundengaging member in working position in the ground; a beam pivotallyconnected to the top of each slidably mounted beam and adjustablyconnected at the lower` portion and carrying a scoop pivotally mountedthereon.

t ROY R. DAILEY.

LEROY VORHIES.

